20606320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1187}}^1$

素因数の和:1238

約数の個数: 80

約数和(自身を含む): 56567808

約数和(自身を除く): 35961488

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1187, 1240, 1736, 2170, 2374, 2480, 3472, 4340, 4748, 5935, 8309, 8680, 9496, 11870, 16618, 17360, 18992, 23740, 33236, 36797, 41545, 47480, 66472, 73594, 83090, 94960, 132944, 147188, 166180, 183985, 257579, 294376, 332360, 367970, 515158, 588752, 664720, 735940, 1030316, 1287895, 1471880, 2060632, 2575790, 2943760, 4121264, 5151580, 10303160, 20606320]

約数ペア:

[(1, 20606320), (2, 10303160), (4, 5151580), (5, 4121264), (7, 2943760), (8, 2575790), (10, 2060632), (14, 1471880), (16, 1287895), (20, 1030316), (28, 735940), (31, 664720), (35, 588752), (40, 515158), (56, 367970), (62, 332360), (70, 294376), (80, 257579), (112, 183985), (124, 166180), (140, 147188), (155, 132944), (217, 94960), (248, 83090), (280, 73594), (310, 66472), (434, 47480), (496, 41545), (560, 36797), (620, 33236), (868, 23740), (1085, 18992), (1187, 17360), (1240, 16618), (1736, 11870), (2170, 9496), (2374, 8680), (2480, 8309), (3472, 5935), (4340, 4748)]